发明名称 |
Image formation using nuclear magnetic resonance |
摘要 |
Nuclear magnetic resonance apparatus designed to enable two and three dimensional images of objects to be obtained has coils for applying a static magnetic field and for applying magnetic gradients to the field in each of three orthogonal directions over the entire volume of a sample and a radio frequency signal generator for applying signals having selected frequency components simultaneously with the magnetic field gradients. In use the spins in all regions of a sample except a slice are saturated or excited in the presence of one magnetic field gradient then a slot in the slice is energized in the presence of a second magnetic field gradient and the free induction decay from the slot read out in the presence of a third gradient. The procedure is repeated for successive slots in a slice and for successive slices.
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申请公布号 |
US4021726(A) |
申请公布日期 |
1977.05.03 |
申请号 |
US19750610436 |
申请日期 |
1975.09.04 |
申请人 |
NATIONAL RESEARCH DEVELOPMENT CORPORATION |
发明人 |
GARROWAY, ALLEN NATHAN;GRANNELL, PETER KEVIN;MANSFIELD, PETER |
分类号 |
A61B10/00;A61B5/055;G01R33/36;G01R33/48;G01R33/54;(IPC1-7):G01R33/08 |
主分类号 |
A61B10/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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